RR195 - Review of methods for demonstrating redundancy in dynamic positioning systems for the offshore industry

Reviews the current approach to demonstrating redundancy on
offshore vessels with dynamic positioning systems, in order to
establish whether it meets the requirements for suitable and
sufficient risk assessment. The review covers the relevant formal
requirements and guidelines, recent incident experience, failure
modes and effects analyses (FMEAs) and trials reports,
consultations with stakeholders in the industry, and a review of
approaches used in other industries. It concludes that the current
approach is appropriate in principle, although there are several
areas of weakness in the way it is applied in practice. In order to
make more effective use of FMEAs, the report recommends that
management guidance should be developed, to provide an industry
standard for how FMEAs of dynamic positioning systems should be
specified, managed, performed, verified and updated.